add vnc driver

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@997 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 268 insertions, 0 deletions

diff --git a/drv_vnc.c b/drv_vnc.c
new file mode 100644
index 0000000..a8bbbc8
--- /dev/null
+++ b/drv_vnc.c
@@ -0,0 +1,268 @@
+/* $Id$
+ * $URL$
+ *
+ * Libvncserver driver
+ * 
+ * Copyright (C) 2009 Michael Vogt <michu@neophob.com>
+ * Modified from sample code by:
+ * Copyright (C) 2005 Michael Reinelt <michael@reinelt.co.at>
+ * Copyright (C) 2005, 2006, 2007, 2008, 2009 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * LCD4Linux is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_vnc
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rfb/rfb.h> 
+
+#include "debug.h"
+#include "cfg.h"
+#include "qprintf.h"
+#include "udelay.h"
+#include "plugin.h"
+#include "widget.h"
+#include "widget_text.h"
+#include "widget_icon.h"
+#include "widget_bar.h"
+#include "drv.h"
+
+#include "drv_generic_graphic.h"
+
+
+
+/* 15 frames per second (if we can) */
+#define PICTURE_TIMEOUT (1.0/15.0) 
+
+static char Name[] = "VNC";
+
+static rfbScreenInfoPtr server;
+static int xres = 320;
+static int yres = 200;
+static int BPP = 4;
+
+
+static int drv_vnc_open(const char *Section)
+{
+    if (cfg_number(Section, "xres", 320, 32, 2048, &xres) < 1) {
+        info("[DRV_VNC] no '%s.xres' entry from %s using default %d", Section, cfg_source(), xres);
+    }                    
+    if (cfg_number(Section, "yres", 200, 32, 2048, &yres) < 1) {
+        info("[DRV_VNC] no '%s.yres' entry from %s using default %d", Section, cfg_source(), yres);
+    }
+    if (cfg_number(Section, "bpp", 4, 1, 4, &BPP) < 1) {
+        info("[DRV_VNC] no '%s.bpp' entry from %s using default %d", Section, cfg_source(), BPP);
+    }
+    return 0;
+}
+
+
+static int drv_vnc_close(void)
+{
+    rfbShutdownServer(server, TRUE);
+    free(server->frameBuffer);
+    return 0;
+}
+
+static void drv_vnc_blit_it(const int row, const int col, const int height, const int width, unsigned char* buffer)
+{
+    int r, c, ofs;
+    RGBA p;
+    
+    for (r = row; r < row + height; r++) {
+	for (c = col; c < col + width; c++) {
+	    p = drv_generic_graphic_rgb(r, c);
+	    ofs = (r * xres + c) * BPP;
+	    buffer[ofs++] = p.R;
+	    buffer[ofs++] = p.G;
+	    buffer[ofs++] = p.B;
+	    buffer[ofs  ] = 255;
+	}
+    }
+}
+
+static void drv_vnc_blit(const int row, const int col, const int height, const int width)
+{
+    if (rfbIsActive(server)) {
+    //todo blit only if client are connected...
+	drv_vnc_blit_it(row, col, height, width, (unsigned char *)server->frameBuffer);
+        rfbMarkRectAsModified(server, 0, 0, xres, yres);
+        rfbProcessEvents(server, server->deferUpdateTime*1000);
+    }
+}
+
+static void doptr(int buttonMask,int x,int y,rfbClientPtr cl)
+{
+    //printf("doptr\n");
+//    ClientData* cd=cl->clientData;
+    
+    if(x>=0 && y>=0 && x<xres && y<yres) {
+	if(buttonMask) {
+		printf("btn:%d, x:%d, y:%d\n", buttonMask, x, y);
+	}
+    }    
+    
+    rfbDefaultPtrAddEvent(buttonMask,x,y,cl);
+}
+
+static void dokey(rfbBool down,rfbKeySym key,rfbClientPtr cl)
+{
+    printf("dokey\n");
+}
+
+/* start graphic display */
+static int drv_vnc_start(const char *section)
+{
+    char *s;
+
+    s = cfg_get(section, "Font", "6x8");
+    if (s == NULL || *s == '\0') {
+	error("%s: no '%s.Font' entry from %s", Name, section, cfg_source());
+	return -1;
+    }
+
+    XRES = -1;
+    YRES = -1;
+    if (sscanf(s, "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) {
+	error("%s: bad Font '%s' from %s", Name, s, cfg_source());
+	return -1;
+    }
+
+    /* Fixme: provider other fonts someday... */
+    if (XRES != 6 && YRES != 8) {
+	error("%s: bad Font '%s' from %s (only 6x8 at the moment)", Name, s, cfg_source());
+	return -1;
+    }
+
+    /* open communication with the display */
+    if (drv_vnc_open(section) < 0) {
+	return -1;
+    }
+
+    /* you surely want to allocate a framebuffer or something... */
+    server=rfbGetScreen(0, NULL, xres, yres, 8, 3, BPP);
+    server->desktopName = "LCD4Linux VNC Driver";
+    server->frameBuffer=(char*)malloc(xres*yres*BPP);
+    server->alwaysShared=(1==1);
+    server->ptrAddEvent = doptr;
+//    server->kbdAddEvent = dokey;
+    
+    /* Initialize the server */
+    rfbInitServer(server);
+                
+    /* set width/height */
+    DROWS = yres;
+    DCOLS = xres;
+
+    return 0;
+}
+
+/****************************************/
+/***        widget callbacks          ***/
+/****************************************/
+
+
+/* using drv_generic_text_draw(W) */
+/* using drv_generic_text_icon_draw(W) */
+/* using drv_generic_text_bar_draw(W) */
+/* using drv_generic_gpio_draw(W) */
+
+
+/****************************************/
+/***        exported functions        ***/
+/****************************************/
+
+
+/* list models */
+int drv_vnc_list(void)
+{
+    printf("vnc server");
+    return 0;
+}
+
+
+/* initialize driver & display */
+int drv_vnc_init(const char *section, const int quiet)
+{
+    int ret;
+
+    /* real worker functions */
+    drv_generic_graphic_real_blit = drv_vnc_blit;
+
+    /* start display */
+    if ((ret = drv_vnc_start(section)) != 0)
+	return ret;
+
+    /* initialize generic graphic driver */
+    if ((ret = drv_generic_graphic_init(section, Name)) != 0)
+	return ret;
+
+    if (!quiet) {
+	char buffer[40];
+	qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
+	if (drv_generic_graphic_greet(buffer, NULL)) {
+	    sleep(3);
+	    drv_generic_graphic_clear();
+	}
+    }
+
+    return 0;
+}
+
+
+/* close driver & display */
+int drv_vnc_quit(const int quiet)
+{
+    info("%s: shutting down.", Name);
+
+    /* clear display */
+    drv_generic_graphic_clear();
+
+    /* say goodbye... */
+    if (!quiet) {
+	drv_generic_graphic_greet("goodbye!", NULL);
+    }
+
+    drv_generic_graphic_quit();
+
+    debug("closing connection");
+    drv_vnc_close();
+
+    return (0);
+}
+
+
+DRIVER drv_vnc = {
+    .name = Name,
+    .list = drv_vnc_list,
+    .init = drv_vnc_init,
+    .quit = drv_vnc_quit,
+};